all water based washes will do this...
It is because of the properties of water (i.e. surface tension) that causes this. Keep in mind that water is only the vehicle to deliver your pigments. Water will tend to \'bead\' on a surface, and not sit flat, thus mixing up how the pigment mixed into it is distributed. Thus, you will find that the pigment is pushed OUT of the nooks and crannies, to where you don\'t want it.
Inks are water based. Paints are water based. You will have these problems with them, unless your washes are think (which mine aren\'t), or you \'pick up the excess\', so it doesn\'t tint where you don\'t want. However, this means \"HIGH MAINTENANCE\", and that just sucks, b/c you don\'t want to sit around and tend it forever to get it to do what you want.
Though you may have problems with other reactions or chelation in paints due to what is in the water, you will find that you are NOT going to get rid of the surface tension qualities without using something to address this.
Whetting agents (i.e. flowaid, detergents, etc.) break the surface tension, and thus tend to minimize this problem.
I have used whetting agents with great success, as well as non-water based solvents with fantastic results.
I usually have a high concentration whetting agent (even a detergent) that I either dip my brush in then the wash or vice versa. Then I flood the area with a little water if it is too think of color, and pick up the excess with the brush.
I also use enamel solvent washes, which is what many modellers use who use washes, you will find that the solvent and paint sit waaaaaay down in the recesses. I like it. Tend to look MUCH better than ink washes.
Using future = shiny paint, and I don\'t like that. Shadows just shouldn\'t be shiny.
The other thing is just using thinned paint to \'paint\' your shadows, appropriately tinted so it would be the right \'shadow\' for the color you are shading.
If I get around to making some examples, I\'ll post them. It took me a while to figure this out, and now I consider washes a viable technique along with many others to get good effects on a model.
Hope this helps!